Card-stripper



2 SheetsSheet 1.

(No Model.)

J. M. DUNHAM.

CARD STRIPPER.

No. 299,918. Patented June 3, 1884.

2 t e e h S h t e e h S 2 M A H N U D M m m d 0 V M 0 w CARD STRIPPER.

Patented June 3, 1884.

Nirn STATES PATENT OFFI E. I

JOSEPH M. DUNHAM, OF HOLYOKE, MASSACHUSETTS.

CARD-STRIPPER.

SPECIFICATION forming part of Letters Patent No. 299,918, dated June 3,1884.

Application filed March 20, 1882. (No model.)

' of Massachusetts, have invented a certain new and useful Improvementin Card-Strippers, of which the following is a specification.

My improvement has relation to mechanism for stripping the top-flats ofcarding-machines, and has particular reference. to the mech anism bywhich the fast and slow motions are controlled and regulated. It iscustomary to mount the arm or frame which carries the stripping devicesupon the axle of the card-' ing-cylinder as an axis, and to connect thestripper with fast and slow motion pulleys. By the slow-motion pulleythe arm or frame is vibrated or caused to travel back and forth alongthe top-flats, and by the fast-motion pulley the, stripping deviceproper is caused to act upon the lifted top flat opposite which thestripping mechanism, by the movement of the arm or frame, is brought.The shifting of the actuating-belt from the one pulley to the other isusually accomplished by means of a belt-shipper controlled by a camprovided with two swells-the one, which may be called the fast-motionswell, to move the belt-shipper in a direction to throw the belt fromthe slow to the fast motion pulley, and the other, which may be calledthe slow-motion swell, to move the belt-shipper in the contrarydirection, so as to return the belt from the fast to the slow pulley.According to the quality of the cotton which passes through thecarding-machine,there is more or less waste caught up by the top-flats,thus rendering it desirable to strip each flat more or less frequently,according to the nature of the cotton operated on. To this end, in somecases the stripper is arranged to strip each flat in succession. Inother cases it strips alternate flats, and so on, this action of thestripper being determined by the relative arrangement and dimensions ofthe fast and slow swells of the cam. In every case heretofore, however.of which I have knowledge the action of the particular cam employed inany one case has been fixed and invariable. If formed, for example, tocause alternate flats to be stripped, it could be used for that only,

and thus in order to vary the action of the stripper, in the sense ofcausing it to skip a greater or a less number of flats, it has beennecessary to take off the cam and replace it by another of aconformation suitable to effect the change desired. It is my object topro vide for this variation in the action of the stripper withoutnecessitating the use of a number of interchangeable cams. In otherwords, it is my object to give one cam the capacity to do the work whichheretofore has been accomplished only by having recourse to anumber ofcamsto be substituted one for the other, according to the requirementsof the work. This result I find can be obtained by making the fast andslow motion swells of the cam adj ustable with reference to one anotherin the sense that they may be set nearer together or farther apart, sothat the distance traversed by the pin of the belt-shipper (whichprojects in the cam-groove) before it reaches the fastmotion swell mayvary. The greater this distance the longer will the shipper remain inits slow-motion position, the more travel will the stripper-carryingarmor frame have during the intervals between the strip ping operations,and consequently'the greater number of flats will it pass, and the lesstheir distance apart the less will be the extent of travel of the saidarm or frame during said intervals, and consequently the fewer flatswill it pass. In this way, by varying the adjustment of the swells, Ican cause the stripper to skip varying numbers of flats, asdesired. Itwill thus be seen that my improvement is characterized by theemployment, in connection'with the fast and slow motion pulleys, thestripping mechanism actuated thereby, and the beltshipper for shippingthe 'belt from the one pulley to the other, of a sectionalshipper-controlling cam, the fast and slow motion swells of which areadjustable nearer to or farther from one another, for the purpose ofvarying the interval during which the shipper occupies its slow-motionposition.

The nature of my invention will be readily understood by reference tothe accompanying drawings, in which Figure 1 is a side elevation of acardingmachine provided with stripping devices embodying my invention.Fig. 2 is an edgeview, on enlarged scale, of a portion of the stripper.Fig. 3.is a plan of the sectional shipper-controlling cam. Fig. 4 is aside or edge elevation of the same. Fig. 5 is a plan of the fastmotionswell detached.

I will first describe the general organization of the machine and itsappurtenances, and will then proceed to a description of those parts inwhich my improvement more particularly is comprised.

Thecarding-machine represented is one of known construction. The axle orshaft of the carding-cylinder is indicated at T, and on it are mountedthe fast-motion pulleyD and the slow-motion pulley O. The former pulley,D, is fast on the shaft T, and the latter, (3, is loose thereon. Thedoffer-actuating shaft S drives the doffer (I through the intermediaryof belt 1 and pulleys 2 3, spur-wheel K, fast on the axis of pulley 3,and gear 6 on the axle of the doffer d. The slow-motion pulley 0 getsits motion from the same shaft S through the intermediary of a beveledgear fast on the axis of pulley 3, which meshes with beveled pinion 4 onshaft B. On this shaft is another beveled pinion, 5, which engages a.beveled gear, 6, on shaft G, which shaft, at

its other end, carries another beveled gear, 7, that engages and drivesthe pulley G. I remark here that shaft B, through the intermediary ofgearing 8 9, drives the feedwheels of the carding-machine, the machinebeing one of that type in which the feed and doffer are at the same sideof the machine. Loose on the same axis with the pulleys O D is thependulous weighted arm or frame F, which carries the'working parts ofthe stripper. At the upper end of the arm is the pulley E, driven fromthe fast or loose pulley by a belt, 0, in the usual way. On the hub orshaft of this pulley E is a pinion, a, which gears with an intermediategear, Y, (on arm F,) on whose hub is a pinion, a, which gears with anddrives the toothed wheel H, mounted to revolve on arm. F. This wheel,when in motion, operates in connection with the mangle rack and pinion(indicated at g h) in the wellknown way to produce the back-and-forthmovement of arm F. The stripper-arm proper is indicated at j. Thebelt-shipper is shown at B, pivoted at t, in the usual way, to an arm orbracket, t", on arm F.

Thus far the general organization and arrangement of parts does notessentially differ from that of other known card-stripping devices.

I now proceed .to a description of the sectional shipper-controllingcam, in the combination of which with the shipper, the fast and tion.

cam, and is provided with swells M N. The former is the slow-motionswell. The latter is the fast-motion swell. The direction of revolutionof the cam is indicated by the arrow in Figs. 3 and 4. The belt-shipperB is provided, as usual, with a pin or roller stud, which enters thegroove of the cam. WVhen this stud is in the part m of the groove, theshipper is in its slow-1notion position, as seen in Fig. 2, and when thestud is in the part a of the groove the shipper is in its fast-motionposi- It will thus be seen that with the cam revolving in the directionof the arrow in Fig. 4, the farther the toe of the swell N is from theswell M the longer will the shipper remain in its slow-motion position,and therefore the greater will be the distance traveled by the arm orframe F in the intervals be tweenthestrippingoperations. Consequently,by varying the distance of the two swells from one another I cancorrespondingly increase or decrease the extent of the periodical travelof the frame F. To this end either or both of the swells can be madeadjustable. I havein the drawings represented the swell N as madeadjustable, and this in practice will be found sufficient. It is madedetachable, and is held to the appropriate flange of the cam by a screw,L, which passes through any one of a series of holes, L, formed in theflange, into the selected one of a series of internally screwthreadedsockets, a tapped into the swell N. This is one simple and convenientway of giving the swell the requisite capacity for adj ustment.

The mode of operation of the devices under the arrangement described hasbeen sufficiently pointed out during the course of this specification,and requires no further explanation.

WVhat I claim herein as new and of my own invention is- 1 Thecombination, in a card-stripper, with the fast and slow motion pulleys,the stripping mechanism, the belt, and the belt-shipper, of a sectionalshipper-controlling cam provided with fast-motion and slow-motion swellsadjustable with relation to one another, substantially as and for thepurposes hereinbefore set forth.

JOSEPH M. DUNHAM.

\Vitn esses:

JOHN J. REARDON, NATHAN Conn.

